7.

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fconst_<f>

push the single float 0.0, 1.0 or 2.0

Jasmin Syntax

     fconst_0 or     fconst_1 or     fconst_2 

Stack

Before	After
...	<f>
	...

Description

fconst_<f> represents the series of opcodes fconst_0, fconst_1, and fconst_2 that are used to push the constant single-precision floats 0.0, 1.0 and 2.0 onto the stack.

For example, to push the single-precision float zero onto the stack, use:

     fconst_0 ; push single-precision float 0 onto the stack 

Note that you could also use:

     ldc 0.0  ; push the float 0.0 onto the stack 

although this instruction takes more space in the class file and is also less efficient.

Example

 fconst_0    ; push the float 0.0 onto the stack fconst_1    ; push the float 1.0 onto the stack fconst_2    ; push the float 2.0 onto the stack 

Bytecode

Type	Description
u1	fconst_0 opcode = 0x0B (11)
u1	fconst_1 opcode = 0x0C (12)
u1	fconst_2 opcode = 0x0D (13)

See Also

bipush, sipush, ldc, ldc_w, ldc2_w, aconst_null, iconst_m1, lconst_<l> iconst_<n>, lconst_<l>, dconst_<d>

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Java Virtual Machine, by Jon Meyer and Troy Downing, O'Reilly Associates